<!DOCTYPE html>
<html>
  <body>
    <select size="10">
      Shouldn't see me
      <option>one</option>
      Or me
      <option>two</option>
      <optgroup>
        I should hide too
        <option>three</option>
        And me too
        <option>four</option>
      </optgroup>
      And I
    </select>
  </body>
</html>
